[tor-bugs] #8979 [pyobfsproxy]: obfsproxy: Use server-side transport parameters

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#8979: obfsproxy: Use server-side transport parameters
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 Reporter:  asn          |          Owner:  asn
     Type:  task         |         Status:  new
 Priority:  normal       |      Milestone:     
Component:  pyobfsproxy  |        Version:     
 Keywords:               |         Parent:     
   Points:               |   Actualpoints:     
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Comment(by asn):

 Steps for completion of this ticket:

 - Make pyptlib parse the `TOR_PT_SERVER_TRANSPORT_PARAMETERS` environment
 variable (#8929), and  return it to the transport. Also, make pyptlib send
 the `ARGS` option in its `SMETHOD` lines.

 - Make obfsproxy get the parameters from pyptlib and pass it to the
 correct transport. obfsproxy currently gets info from pyptlib in
 `managed/server.py` using the `managed_info` variable. That info should
 somehow reach the transports (preferably in a clean way), so that
 transports can configure their shared-secrets etc.

 - Obfsproxy transports should be able to select some of those parameters
 and send them back to tor (using the `SMETHOD` line and `ARGS`) so that
 they can be sent to BridgeDB. `SMETHOD` lines are currently sent in
 `managed/server.py` using the `pyptlib` `reportSuccess` function.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8979#comment:2>
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